The KeyMod system is great for three reasons: it’s lightweight, it supports every kind of attachment, and it makes accessory installation incredibly easy-simply insert a compatible accessory’s lugs into the wide end of the keyhole, slide them to the narrow end, and screw them in.

To that end, KeyMod is open source, meaning any manufacturer can produce accessories using the system without having to get permission from its inventors-and without having to pay them royalties.ĭaniel Defense AR-15 With Picatinny Rail On Top, KeyMod on Sides and Bottom The KeyMod rail system was first produced in 2012 by VLTOR Weapon Systems and Noveske Rifleworks in an effort to standardize attachment systems in the firearms accessories market. The first of the two newcomers is KeyMod, named for its keyhole-shaped mounting slots and modular design. ( Check Out the List of Our Best AR-15 Handguards) KeyMod The remainder of this guide will explore the differences between KeyMod vs M-LOK rail systems and help you to make an informed choice between the two. With this shortcoming in mind, a couple of young-buck mounting systems have emerged in recent years that offer similar mounting capabilities with lower profiles and less weight.

While Picatinny rails offer significant improvements over earlier mounting systems, they are not without their faults, the most obvious of which is that they add a good deal of unnecessary weight toward a rifle’s front end. Daniel Defense AR-15 With Quad Picatinny Rail

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